In vitro assessment of farnesoid X receptor antagonism to predict drug-induced liver injury risk

Drug-induced liver injury (DILI) continues to be a major cause of drug attrition and restrictive labeling. Given the importance of farnesoid X receptor (FXR) in bile acid homeostasis, drug-related FXR antagonism may be an important mechanism of DILI. However, a comprehensive assessment of this phenomenon broadly in the context of DILI is lacking. As such, we used an orthogonal approach comprising a FXR target gene assay in primary human hepatocytes and a commercially available FXR reporter assay to investigate the potential FXR antagonistic effects of an extensive test set of 159 compounds with and without association with clinical DILI. Data were omitted from analysis based on the presence of cytotoxicity to minimize false positive assay signals and other complications in data interpretation. Based on the experimental approaches employed and corresponding data, the prevalence of FXR antagonism was relatively low across this broad DILI test set, with 16-24% prevalence based on individual assay results or combined signals in both assays. Moreover, FXR antagonism was not highly predictive for identifying clinically relevant hepatotoxicants retrospectively, where FXR antagonist classification alone had minimal to moderate predictive value as represented by positive and negative likelihood ratios of 2.24-3.84 and 0.72-0.85, respectively. The predictivity did not increase significantly when considering only compounds with high clinical exposure (maximal or efficacious plasma exposures > 1.0 μM). In contrast, modest gains in predictive value of FXR antagonism were observed considering compounds that also inhibit bile salt export pump. In addition, we have identified novel FXR antagonistic effects of well-studied hepatotoxic drugs, including bosentan, tolcapone and ritonavir. In conclusion, this work represents a comprehensive evaluation of FXR antagonism in the context of DILI, including its overall predictivity and challenges associated with detecting this phenomenon in vitro.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:94

Enthalten in:

Archives of toxicology - 94(2020), 9 vom: 25. Sept., Seite 3185-3200

Sprache:

Englisch

Beteiligte Personen:

Norona, Leah M [VerfasserIn]
Fullerton, Aaron [VerfasserIn]
Lawson, Chris [VerfasserIn]
Leung, Leslie [VerfasserIn]
Brumm, Jochen [VerfasserIn]
Kiyota, Tomomi [VerfasserIn]
Maher, Jonathan [VerfasserIn]
Khojasteh, Cyrus [VerfasserIn]
Proctor, William R [VerfasserIn]

Links:

Volltext

Themen:

0C5V0MRU6P
ABCB11 protein, human
ATP Binding Cassette Transporter, Subfamily B, Member 11
BSEP
Bile Acids and Salts
Cholestasis
DILI
FXR antagonism
Farnesoid X-activated receptor
Hepatotoxicity
Journal Article
Receptors, Cytoplasmic and Nuclear
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 16.06.2021

Date Revised 16.06.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s00204-020-02804-4

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM311614698